エンジン改造-マテリアルの出力にパラメーターを追加のバックアップの現在との差分(No.8)

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参考
メモ
やってみた

-
UE4.15.1で検証

参考 †

[UE4] GBufferを拡張せずに異方性スペキュラをやってみる - もんしょの巣穴blog
http://monsho.blog63.fc2.com/blog-entry-193.html

UE4でマテリアル出力にピンを追加（UE4.14.0） - Qiita
http://qiita.com/com04/items/6dc75c647ce97ba72ba4

▲ ▼

メモ †

EMaterialProperty - MP_MAXは33が限界。Uint32でビットマスクにして使っている。

▲ ▼

やってみた †

Engine\Source\Runtime\Engine\Public\SceneTypes.h
1. enum EMaterialProperty
  #spanend MP_PixelDepthOffset, #spanadd
  の下に追加分
Engine\Source\Runtime\Engine\Classes\Materials\Material.h
#spanend FScalarMaterialInput PixelDepthOffset; #spanadd
の下に追加するパラメーターの変数を追加する
#spanend UPROPERTY() FScalarMaterialInput CellShadeParam; #spanadd
- FScalarMaterialInput
- FVector2MaterialInput
- FVectorMaterialInput

Engine\Source\Runtime\Engine\Private\Materials\Material.cpp

void UMaterial::Serialize(...)

#spanend
 static_assert(MP_MAX == 29,
#spanadd

を追加した分のMP_MAX値にする

#spanend
 static_assert(MP_MAX == 33, 
#spanadd

UMaterial::PostLoad()

#spanend
 DoMaterialAttributeReorder(&PixelDepthOffset, UE4Ver);
#spanadd

の下に追加分

#spanend
 DoMaterialAttributeReorder(&CellShadeParam, UE4Ver);
#spanadd

FExpressionInput* UMaterial::GetExpressionInputForProperty(...)

#spanend
 case MP_PixelDepthOffset:        return &PixelDepthOffset;
#spanadd

の下に追加分

#spanend
 case MP_CellShadeParam:            return &CellShadeParam;
#spanadd

UMaterial::CompilePropertyEx

#spanend
 case MP_PixelDepthOffset:        return PixelDepthOffset.CompileWithDefault(Compiler, Property);
#spanadd

の下に追加分

#spanend
 case MP_CellShadeParam:            return CellShadeParam.CompileWithDefault(Compiler, Property);
#spanadd

bool UMaterial::IsPropertyActive(EMaterialProperty InProperty) const

#spanend
 case MP_PixelDepthOffset:
     Active = !bIsTranslucentBlendMode;
     break;
#spanadd

の下に追加。このピンを使用するShadingModelを記述する。

#spanend
 case MP_CellShadeParam:
     Active = ShadingModel == MSM_Cell || ShadingModel == MSM_CellSaturation || ShadingModel == MSM_CellEye || ShadingModel == MSM_CellHair || ShadingModel == MSM_CellHairSaturation || ShadingModel == MSM_CellOutline;
     break;
#spanadd

Engine\Source\Runtime\Engine\Private\Materials\MaterialExpressions.cpp

int32 UMaterialExpressionMakeMaterialAttributes::Compile(...)
UMaterialExpressionBreakMaterialAttributes::UMaterialExpressionBreakMaterialAttributes(...)
#spanend static_assert(MP_MAX == 29, #spanadd
を追加した分のMP_MAX値にする
#spanend static_assert(MP_MAX == 33, #spanadd

UMaterialExpressionBreakMaterialAttributes::UMaterialExpressionBreakMaterialAttributes

#spanend
 Outputs.Add(FExpressionOutput(TEXT("PixelDepthOffset"), 1, 1, 1, 1, 0));
#spanadd

の下に追加分。

#spanend
 Outputs.Add(FExpressionOutput(TEXT("CellShadeParam"), 1, 1, 1, 1, 0));
#spanadd

int32 UMaterialExpressionBreakMaterialAttributes::Compile

#spanend
 PropertyToIOIndexMap.Add(MP_PixelDepthOffset, 24);
#spanadd

の下に追加分

#spanend
 PropertyToIOIndexMap.Add(MP_CellShadeParam, 25);
#spanadd

Engine\Source\Runtime\Engine\Private\Materials\MaterialShared.cpp

void FMaterialAttributeDefinitionMap::InitializeAttributeMap()

#spanend
 Add(FGuid(0x0AC97EC3, 0xE3D047BA, 0xB610167D, 0xC4D919FF), TEXT("PixelDepthOffset"),        MP_PixelDepthOffset,        MCT_Float1,    FVector4(0,0,0,0), SF_Pixel);
#spanadd

の下に追加分。GUIDは被ってはいけない。ピンの初期値もここ。

#spanend
 Add(FGuid(0x0AC97EC4, 0xE3D047BE, 0xB610168C, 0xC4D91203), TEXT("CellShadeParam"), MP_CellShadeParam, MCT_Float4, FVector4(0, 1, 0, 0), SF_Pixel);
#spanadd

Engine\Source\Runtime\Engine\Classes\Materials\MaterialExpressionMakeMaterialAttributes.h

#spanend
 FExpressionInput PixelDepthOffset;
#spanadd

の下に追加するパラメーターの変数を追加する

#spanend
 UPROPERTY()
 FExpressionInput CellShadeParam;
#spanadd

Engine\Source\Runtime\Engine\Private\Materials\HLSLMaterialTranslator.h

FHLSLMaterialTranslator(...)

#spanend
 SharedPixelProperties[MP_PixelDepthOffset] = true;
#spanadd

の下に追加するパラメーターの分初期化を追加

#spanend
 SharedPixelProperties[MP_CellShadeParam] = true;
#spanadd

bool Translate()

#spanend
 Chunk[MP_PixelDepthOffset] = Material->CompilePropertyAndSetMaterialProperty(MP_PixelDepthOffset,this);
#spanadd

の下に追加するパラメーターの分、値の取得を追加

#spanend
 Chunk[MP_CellShadeParam] = Material->CompilePropertyAndSetMaterialProperty(MP_CellShadeParam, this);
#spanadd

Engine\Source\Editor\UnrealEd\Private\MaterialGraph.cpp

#spanend
 MaterialInputs.Add(FMaterialInputInfo(LOCTEXT("PixelDepthOffset", "Pixel Depth Offset"), MP_PixelDepthOffset, LOCTEXT( "PixelDepthOffsetToolTip", "Pixel Depth Offset" ) ));
#spanadd

の下に追加

#spanend
 MaterialInputs.Add(FMaterialInputInfo(LOCTEXT("CellShadeParam", "Cell Shading Param"), MP_CellShadeParam, LOCTEXT("CellShadeParamToolTip", "Cell Shading Param")));
#spanadd

シェーダーからマテリアルのパラメーターを取得する
Engine\Shaders\MaterialTemplate.usf
こんな感じ

 
 
-
|
!
 
-
|
!

#spanend
 half4 GetMaterialCellShadeParamRaw(FPixelMaterialInputs PixelMaterialInputs)
 {
     return PixelMaterialInputs.CellShadeParam;
 }
 half4 GetMaterialCellShadeParam(FPixelMaterialInputs PixelMaterialInputs)
 {
     return GetMaterialCellShadeParamRaw(PixelMaterialInputs);
 }
#spanadd

エンジン改造-マテリアルの出力にパラメーターを追加 のバックアップの現在との差分(No.8)

参考 †

メモ †

やってみた †

エンジン改造-マテリアルの出力にパラメーターを追加のバックアップの現在との差分(No.8)